Matthew User
@matthewuser
Senior Software Engineer with expertise in high-performance web applications.
United StatesWhat I'm looking for
As a Senior Software Engineer with 9 years of experience, I specialize in building high-performance web applications using modern technologies like React/Next.js and Node.js/Nest.js. My journey has taken me through significant roles at Fortune 500 companies, where I have consistently delivered impactful solutions that enhance user experience and drive business results.
At eBay, I led the redesign of the Seller Hub, implementing innovative features that improved SEO and performance, while also architecting a robust backend to streamline API interactions. My work in optimizing full-stack performance has resulted in substantial cost savings and efficiency improvements. I am passionate about mentoring teams and modernizing legacy systems, ensuring that technology serves as a catalyst for growth and innovation.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
eBay
Jul 2019 - Present (6 years 11 months)
Led the redesign of eBay’s Seller Hub using React/Next.js, improving SEO and performance. Architected a Nest.js BFF layer, integrated GraphQL, and designed a Kafka-based event-driven architecture. Migrated legacy systems to Node.js microservices and optimized CI/CD pipelines, significantly enhancing scalability and performance.
Full Stack Developer
Ahold Delhaize
Jan 2015 - Jul 2019 (4 years 6 months)
Developed a React/Redux dashboard for inventory tracking, modernized legacy interfaces, and built Node.js middleware for real-time pricing data synchronization. Created AWS Lambda functions for dynamic pricing adjustments and rewrote a monolithic order management system to support high order volumes.
Education
Degrees, certifications, and relevant coursework
University of North Florida
Bachelor's degree, Computer Science
2010 - 2014
Tech stack
Software and tools used professionally
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